io.convergence_platform.common.validations.MinimumValueValidator Maven / Gradle / Ivy

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Holds the common functionality needed by all Convergence Platform-based services written in Java.

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package io.convergence_platform.common.validations;

import jakarta.validation.ConstraintValidator;
import jakarta.validation.ConstraintValidatorContext;

public class MinimumValueValidator implements ConstraintValidator {
    private double value;

    public static void pathVariable(String value, double constraint, String varName) {
        boolean valid = true;
        if ("".equals(value)) {
            valid = false;
        } else if (ValidationHelper.isValidDouble(value)) {
            valid = validate(Double.parseDouble(value), constraint);
        }

        ValidationHelper.raiseValidationErrorForPathVariable(valid, "min", varName);
    }

    @Override
    public void initialize(MinimumValue constraintAnnotation) {
        ConstraintValidator.super.initialize(constraintAnnotation);
        value = constraintAnnotation.value();
    }

    @Override
    public boolean isValid(Object value, ConstraintValidatorContext context) {
        return validate(value, this.value);
    }

    private static boolean validate(Object value, double constraint) {
        if (value == null) {
            return false;
        }

        if (value instanceof Integer) {
            return ((Integer) value) >= constraint;
        } else if (value instanceof Float) {
            return ((Float) value) >= constraint;
        } else if (value instanceof Double) {
            return ((Double) value) >= constraint;
        }

        return false;
    }
}